/* ------------------------------------------------------------------------------ */
static MBOOL SYSRAM_FreeUserPhy(SYSRAM_USER_ENUM const User, SYSRAM_MEM_BANK_ENUM const MemBankNo)
{
MBOOL Ret = MFALSE;
SYSRAM_MEM_NODE_STRUCT *pPrevOrNextNode = NULL;
SYSRAM_MEM_NODE_STRUCT *pCurrNode = NULL;
SYSRAM_MEM_NODE_STRUCT *pTempNode = NULL;
SYSRAM_MEM_POOL_STRUCT * const pMemPoolInfo = SYSRAM_GetMemPoolInfo(MemBankNo);
/* */
if (!pMemPoolInfo) {
LOG_ERR("pMemPoolInfo==NULL,User(%d),MemBankNo(%d)", User, MemBankNo);
return MFALSE;
}
/* */
pCurrNode = &pMemPoolInfo->pMemNode[0];
for (; pCurrNode; pCurrNode = pCurrNode->pNext) {
if (User == pCurrNode->User) {
Ret = MTRUE; /* user is found. */
if (pMemPoolInfo->UserCount > 0)
pMemPoolInfo->UserCount--;
pCurrNode->User = SYSRAM_USER_NONE;
if (NULL != pCurrNode->pPrev) {
pPrevOrNextNode = pCurrNode->pPrev;
/* */
if (SYSRAM_USER_NONE == pPrevOrNextNode->User) {
/* Merge previous: prev(o) + curr(x) */
pTempNode = pCurrNode;
pCurrNode = pPrevOrNextNode;
pCurrNode->Length += pTempNode->Length;
pCurrNode->pNext = pTempNode->pNext;
if (NULL != pTempNode->pNext) {
pTempNode->pNext->pPrev = pCurrNode;
}
SYSRAM_FreeNode(pMemPoolInfo, pTempNode);
}
}
if (NULL != pCurrNode->pNext) {
pPrevOrNextNode = pCurrNode->pNext;
/* */
if (SYSRAM_USER_NONE == pPrevOrNextNode->User) {
/* Merge next: curr(o) + next(x) */
pTempNode = pPrevOrNextNode;
pCurrNode->Length += pTempNode->Length;
pCurrNode->pNext = pTempNode->pNext;
if (NULL != pCurrNode->pNext) {
pCurrNode->pNext->pPrev = pCurrNode;
}
SYSRAM_FreeNode(pMemPoolInfo, pTempNode);
}
}
break;
}
}
/* */
return Ret;
}
/*
Alignment should be 2^N, 4/8/2048 bytes alignment only
First fit algorithm
*/
static MUINT32 SYSRAM_AllocUserPhy(
SYSRAM_USER_ENUM const User,
MUINT32 const Size,
MUINT32 const Alignment,
SYSRAM_MEM_BANK_ENUM const MemBankNo
)
{
SYSRAM_MEM_NODE_STRUCT* pSplitNode = NULL;
SYSRAM_MEM_NODE_STRUCT* pCurrNode = NULL;
MUINT32 AlingnedAddr = 0;
MUINT32 ActualSize = 0;
//
SYSRAM_MEM_POOL_STRUCT*const pMemPoolInfo = SYSRAM_GetMemPoolInfo(MemBankNo);
if(!pMemPoolInfo)
{
return 0;
}
//
pCurrNode = &pMemPoolInfo->pMemNode[0];
for (; pCurrNode && pCurrNode->Offset < pMemPoolInfo->Size; pCurrNode = pCurrNode->pNext)
{
if(SYSRAM_USER_NONE == pCurrNode->User)
{
//Free space
AlingnedAddr = (pCurrNode->Offset + Alignment - 1)&(~(Alignment - 1));
ActualSize = Size + AlingnedAddr - pCurrNode->Offset;
if (ActualSize <= pCurrNode->Length)
{
// Hit!! Split into 2
// pSplitNode pointers to the next available (free) node.
pSplitNode = SYSRAM_AllocNode(pMemPoolInfo);
pSplitNode->Offset = pCurrNode->Offset + ActualSize;
pSplitNode->Length = pCurrNode->Length - ActualSize;
pSplitNode->pPrev = pCurrNode;
pSplitNode->pNext = pCurrNode->pNext;
//
pCurrNode->User = User;
pCurrNode->Length = ActualSize;
pCurrNode->pNext = pSplitNode;
//
if(NULL != pSplitNode->pNext)
{
pSplitNode->pNext->pPrev = pSplitNode;
}
//
pMemPoolInfo->UserCount++;
break;
}
//Not hit
ActualSize = 0;
}
};
//
return ActualSize ? (AlingnedAddr + pMemPoolInfo->Addr) : 0;
}
